Search a large list of words in one of two modes.
In look mode,
only words starting with the given string are displayed.
This mode runs very quickly.
Only purely alphabetic strings are allowed.
The system look(1) program is co-opted into helping.

In grep mode,
any entries matching the pattern are shown.
This takes much longer to run,
because the entire 26 megabyte file must be grepped through.
The pattern is not a grep(1) pattern,
but rather a perl(1) pattern.
You may use Unicode named characters,
plus several custom aliases,
in your pattern.

--verbose / -v use up to three times for more verbosity
level 0 is just the word, like look
level 1 includes parts of speech
level 2 also includes assorted markings
level 3 is the entire original entry
--nopager never call the pager